Molding machine



Feb. 24. 1925. 1,527,765

w. H. WANGELIN MOLDING momma Filed 0st. 12, 1921 '2 Sheets-Sheet 1 J ran/W" Feb. 24,1925. 1,527,765 W. H. WANGELIN v uowme momma Filed Oct- 12. 1921 2 Sheets-Sheet 2 m iiiihi; lu g ng l III/III Patented Feb. 24, 1925.

UNITED: stares J rarest" -orrree.

WALTER HQ madam, on s'r'. Louis, hasten.

MOLDING Mauritian? Application filed October 194E921";- Serial rm schism;

a mold whereby the necessity of ramming the sand in said mold to the required density is eliminated. H i

Many apparatus of the type of the machine disclosed herein, in Which a rotor is employed to which sand or mold-material is fed from a hopper, have been produced, but in each deficiencies are present hich prevent same from becoming entirely successful. One serious difficulty is caused by the fact that the sand or mold-material is damp and it is therefore difficult to successfully feed the same to the ramming head.

In the apparatus disclosed in the presentapplication a positive feeding device is employed which feeds just the proper amount of mold-material to the rotor at each revolution thereof and an agitating device which prevents said mold-material from solidifying in the hopper before it reaches the rotor. i

Fig. I is a vertical section through the, molding machine, apart of the hopper and a part of the discharge end of said machine being broken'aivay. i' i Fig. II is a section ou line II-EII ofFig; ij looking in the direct-ion indicated by arrow. 7

Fig. 111 is a section on line line III III of I looking inthe' direction indicated by arrow.

Fig: Y is a perspective ofthe removable rotor wear plate;

hig. V' is a side molding machine in place on its support, parts of said support being'broken away to show the interior mechanism thereof.

elevation SllOWlllP the Fi V1 is asection on line VI'--VI o'f Fig. V.

In the drawings 1- designates a hopper Which is adapted to receive the sand or mold-material to be deliveredto the molding flask A. illustratedin 2 designates a stator which is' p'rovlded' with an inlet 3 and an outlet 4; The hopper 1 is supported by said's'tatorythe"open lower end of said hopper beingin communication Wrtlrthe stator inlet 3 and s'ald hopper being mounted on said stator in such manner as to be movable vertically with relation to said stator, the purposeo'fw'hich Will be subsequently pointedout.

Mounted to rotate on thedrive'shaft 5 Which extends transversely through the.

stator 2 is a rotor R Whichcomprises'a body portion 6 of approximately the-same Width as the inside of the stator 2, and a projecting blade 7 the outer edge of'which is in close proximity to the inside curved face 2 of the stator '2. The blade 7 of the. rotor R is provided with a removable Wear plate 8, a seat for which .is provided'on said blades 7, and is provided With a lug'9 adapted to GXiJGDCl'lOGtWGGIl a pair of strengthening ribs 10' which reinforce said blade 7. Affastening device 11 passes through the ribslO and through the lug 9 whereby said Wear plate is secured in place.

Keeping in mind thefact that the Width of the rotor it is approximately the. same as the Width of the inside of, thestator2 and that the outer edge of the blade 7 is in close proximity to theinside face of said stator; it is apparent that' if material is introduced into said stator and in the path of travel of said blade said material Would be struck by the blade; It Will-now be explained hoW predetermined amounts of materialare intermittently fed into the stator.

Mounted on a shaft 12 which extends transversely of the inlet portion of the stator 2 and is rotatably iournaled in suitable bearings formed inthe Walls of said stator, is a feeder F comprising a body portion 13 havinga p'luralityof Wings 14. The feeder F rotates in the direction indicated by the arrow in I and as the inlet portion of the stator is normally full of sand it is apparent that as each of the wings 14 pass through the body of sand in said inlet portion an amount of sand will be gathered by said wing and cast into the body portion of the stator 2. By referring to rig. ill of the drawings it will be observed that the inside faces of the walls of the inlet portion of the stator 2 are inclined toward the feeder l and that said feeder F is or approximately the same width as that portion of said inlet portion adjacent to which it is located, hence all of the sand in the hopper 1 will be directed to said feeder and projected thereby to the central portion of the stator.

To ti ansmit motion from the drive shaft 5 to the shaft 12 on which the feeder F is mounted 1 provide said drive shaft 5 with a gear wheel 15 which meshes with a comparatively large gear wheel 16 mounted on the shaft 12.

Due to the fact that the sand or mold material is damp and therefore likely to pack or solidify in the hopper l, I provide an agitating mechanism whereby said hopper is kept in motion while the machine is running, said agitating mechanism comprising a shaft 17 extending transversely of the inlet portion of the stator above the shaft 12, said shaft 17 being journaled in suitable hearings in the walls of said stator and having at each of its ends a cam 18. The shaft 17 and its associated cams 18 are rotated by means of gears 19 and 20, the gear 19 being mounted on the shaft 12 and the gear 20 which meshes with the gear 19 being mounted on the shaft 18 at one end thereof whereby motion is transmitted from said shaft 12 to said shaft 17.

As has already been stated the hopper 1 is loosely mounted on the stator 2 and is capable of moving vertically with relation thereto. The securing and guiding means which permits this vertical movement comprises a plurality of studs 22 supported by and extending upwardly from a flange 3 of the inlet portion of the stator 2. hese studs 22 pass through apertures 23 in the flange l" adjacent to the lower end of the hopper 1 and are each provided with a nut 2& at the upper end thereof. A coil spring 25 surrounds each stud 22, one end of said spring bearing against the flange 1 and the other end of said spring bearing against the lower face of the nut 2 f at the upper end of said stud. The lower end of the hopper 1 extends into the inlet poition 3 of the stator 2 so that a continuous wall will be provided at the point where said hopper 1 and said inlet 3 meet even though said hopper 1 is being moved vertically with relation to said inlet 3.

Secured to the hopper 1 at points immediately above the cams 18 are rollers 26. said rollers being engaged by said cams in a manner and for a purpose which will be hereinafter described.

A wear plate 27 is provided inside the stator 2, at the point where the projected sand strikes the wall of said stator, said plate being provided With fastening devices which permits the easy removal of said plate and substitution of a new plate when said plate becomes worn.

To permit the molding machine to be moved readily from one flask to another within a limited area and to every part of a comparatively large flask, I mount said machine on a support comprising a base member 28 which is provided with an upstanding standard 29. A swinging member 30 pivotally mounted on said base member 28 is provided with a sleeve portion 31 which surrounds the upper portion of the standard 29. A ball bearing 32 is interposed between the closed upper end of the standard 28 and the swinging member 30. Rollers 33 are supported by the lower edge of the sleeve portion 31 and are adapted to bear against the outside face of standard 28.

The member 30 is provided with lugs 3% which support pairs of rollers 35, the purpose of these rollers being to support a frame comprising a pair of spaced apart channel beams 36, each pair of rollers 35 at one side of the member 30 being adapted to lie between and engage the flanges on one of a d channel beams as is shown most clearly in Fig. VI whereby said frame is slidably mounted on said member 30.

Supported on the channel beams 36 at one end thereof is the molding machine B and at the other end is mounted a motor M. A shaft 37 extends from the motor to the molding machine whereby motion is trans mitted to the rotor therein. A tower 38 is supported on the member 30 and is adapted to swing therewith, said tower being surmounted by a comparatively large moldmaterial receiving hopper 39. A chute 40 extends from the hopper 39 to the hopper 1 of the molding'machine whereby moldmaterial is supplied to the molding machine, said chute being slidably supported by said tower 38.

The operation of my improved molding machine is as follows:

Assuming that a number of flasks are located close to the molding machine support and it is desired to charge each of said flasks with sand, said molding machine may be brought to a position over each of said flasks due to the fact that the channel beams 36 which support said machine are slidably mounted on the member 30, which will permit said molding machine to be moved toward and away from the base member 28, and because the member 30 is nivotallv drive shaft/5 is provided withone third as' many teeth astlie gear wheel 16. Hence, the feeder F ont he same shaft asthe gear wheel 16 will be rotated at one third the.

speed of the rotor. The hopper 1 andthe inlet 3 are-filled withmold material which hasbcen supplies. from the hopper 89 (Fig. V) and as the feeder F is rotated through the body ofmold-material in the inlet 3 the wing 14 will gather a wad of said moldmaterial and cast it into the central portionof the stator and into the path of travel of the projecting blade"? on the rotor R, which rotor is so timed as to place said blade in position'to pick up said wad of mold material as soon as it has left the feeder wing 1 1. The rotor will then project said wad of mold-material with great" force through the stator outlet 4; and into the molding flask A wherein it is firmly packed, and because of the difference in speed of the rotor R and the feeder F the blade 7 will be in position to receive the wads of moldnnaterial as they'are cast from eachsucceeding wing 14 of the feeder.

To eliminate the tendency of the moldmaterial solidifying I employ the agitating cams 18 which are constantly rotating when the machine is in motion and which engage the rollers'26, consequently when the high portion of said cams contact with said rollers 26,. said loosely supported hopper 1 will be raised upwardly against the action of the springs 25 which springs will return said hopper to its lowermost position after said high portion of the cams have passed away from said rollers. Thus the hopper 1 is kept in constant motion while the machine is running and solidification of the mold-material therein prevented.

It has been hereinbefore stated that the feeder F is of such width as to substantially fill the inlet opening 8, and because said feeder is in a position to close said inlet opening in a longitudinal direction when the mold-material which has'justbeen fed into the stator is struck by the rotor blade I said feeder F will act as a closure for said opening and the possibility of said moldmaterial being cast back into the inlet opening 3 is eliminated. The faces F of the feeder F are of such curvature as to per mit the blade 7 on the revolving rotor R topass: the rotating feeder Fwithout interference therewith.

I claim:

1. A molding machine comprising a rotor, a projecting blade on said rotor, means for driving said rotor, and traveling means for intermittently feeding predetermined amounts of mold material into the path of travel of said projecting blade on said rotor, the path of travel of the last mentioned means overlapping the path of travel of said projecting blade on said rotor when said molding machine is in operation.

2. A molding machine comprising a rotor, a projecting blade on said rotor, means for driving said rotor and rotating means for feeding predetermined amounts of mold material into the path of travel of the pro jecting blade on said rotor, the path of travel of the last mentioned means overlapping the path of travel of said projecting blade on said rotor when said molding machine is in operation.

3. A molding machine comprising a rotor, a projecting blade on said rotor, means for driving said rotor, and feedingmeanscomprising a rotatable member provided with a plurality of wings whereby predetermined amounts of mold material are cast into the path of travel of the projecting blade on said rotor, the path of travel of the wings on said rotatable member overlapping the path of travelof said projecting blade on said rotor when said molding machine is in operation.

4:. A molding machine comprising a rotor, a. projecting blade on said rotor, means for driving said rot-or, rotatable means for intermittently feeding predetermined amounts of mold material into the path of travel of said projecting blade on said rotor, the path of travel of said rota-table means overlapping the path of travel of said projecting blade on said rotor when said molding machine is in operation, and means whereby said rotor and said feeding means are cooperatively connected together.

5. A molding machine comprising a rotor, a projecting blade on said rotor, a. stator within which said rotor operates, feeding means comprising a rotating member provided with a plurality of wings whereby predetermined amounts of mold-n'iaterial are intermittently cast in the path of travel of the projecting blade on said rotor, and means whereby said rotor and said feeding means are cooperatively connected.

6. A molding machine comprising a rotor, a projecting blade on said rotor, a stator within which said rotor operates, and stator being provided with an inlet and an outlet, feeding means located within said inlet, said feeding means comprising a rotating member provided with a plurality of wings to said inlet, feeding means located within said inlet below said hopper, said feeding means comprising a rotating member provided with a plurality of wings whereby predetermined amounts of mold-material are projected from said inlet into the path of travel of the projecting blade on said rotor, and means whereby said rotor and said feeding means are cooperatively connected.

8. A molding machine comprising a rotor, a stator within which said rotor operates, said stator being provided with an inlet and an outlet, a mold-material receiving hopper loosely mounted on said stator adjacent to said inlet, feeding means located within said inlet below said hopper whereby predetermined amounts of mold-material are intermittently fed to said rotor, and means whereby movement is imparted to said loosely mounted hopper whereby the mold material therein is agitated to prevent solidification thereof.

9. A molding machine comprising a rotor, a stator within which said rotor operates, said stator being provided with an inlet and an outlet, a mold-material receiving hopper mounted on said stator and adapted to move vertically relative to said stator, feeding means located within said inlet whereby predetermined amounts of mold-material are intermittently fed to said rotor, and means supported by said stator whereby movement is imparted to said hopper to agitate the mold-material therein.

10. A molding machine comprising a rotor, a stator within which said rotor operates, said stator being provided with an inlet and an outlet, a mold-material receiving hopper mounted on said stator and adapted to move vertically relative to said stator, feeding means located within said inlet whereby predetermined amounts of moldmaterial are intermittently fed to said rotor, and means whereby vertical movement is imparted to said hopper comprising a cam rotatably supported on said stator, a roller supported on said hopper, said roller being adapted to be engaged by said cam, and means whereby said cam is rotated.

11. A molding machine comprising a rotor, a stator within which said rotor operates, said stator being provided with an inlet and an outlet, a mold-material receiving hopper mounted on said stator, means whereby said hopper may be moved vertically relative to said stator, said means comprising pins secured to said stator, said pins extending through apertures in a portion of said hopper, rollers supported on said hopper, cams rotatably supported on said stator, said cams being adapted to engage said rollers to move said hopper vertically, springs opposing the upward movement of said hopper, and means whereby said cams are rotated, and feeding means located within the inlet of the stator whereby predetermined amounts of mold-material are intermittently fed to said rotor.

12. A molding machine comprising a rotor, a projecting blade on said rotor, a stator within which said rotor operates, said stator being provided with an inlet and an outlet, at mold-material receiving hopper on said stator, means whereby said hopper may be moved vertically with relation to said stator, said means comprising pins secured to said stator, said pins extending through a portion of said hopper, rollers supported on said hopper, cams rotatably supported on said stator, said cams being adapted to engage said rollers to move said hopper vertically, springs opposing the upward movement of said hopper, and means whereby said cams are rotated, feeding means located within the inlet of said stator, said feeding means comprising a rotating member provided with a plurality of wings whereby predetermined amounts of mold-material are projected from said inlet into the path of travel of the projecting blade on said rotor, and means whereby said rotor and said feeding means are cooperatively connected.

13. A molding machine comprising a rotor, a frame comprising a pair of spaced apart channel beams at one end of which said rotor is mounted, a motor mounted on said frame at the opposite end thereof, means extending from said motor to said rotor for operating said rotor, a support intermediate of said rotor and said motor for supporting said frame, said support comprising a base member and a member pivotally mounted on said base member and adapted to swing horizontally in an arc of a circle thereabout, said last mentioned member being provided with an overhanging portion adapted to support the frame and with rollers adapted to engage the flanges of the channel beams of said frame whereby said frame is slidably supported by said member, a tower mounted on said pivotally mounted member, a mold-material receiving hopper supported by said tower, a chute extending from said hopper to said rotor whereby said rotor is supplied with moldmaterial, and means whereby said chute is movable relative to said tower.

14. A molding machine comprising EL rotor, a projecting blade on said rotor, astator within which said rotor operates, said stator being provided With an inlet opening and an outlet opening, and feeding means located Within said inlet opening whereby predeten mined amounts of 1nold-material are intermittently east in the path of travel of the projeotinghlade on said rotor, said feeding means being adapted to close said inlet opening whereby the reentry of said mold-inaterial "from said stator into said inlet opening is prevented. 1

In testimony that I claim the foregoing I hereunto my signature.

WALTER- H. VVANGELIN. 

